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【Widely Used】The noise meter is the use of environmental sound level instrument, can be widely used in such as factories, workshops, schools, residential, office areas, traffic roads, audio and other occasions of sound level measurement. Also suitable for noise engineering, product quality control, health,prevention and control.
【A Weighted Measurement】 A Weighted network (automatic switching range display)
【Fast/Slow mode selection】Press the MODE key, you can convert the response speed of the noise meter, FAST fast, SLOW slow
【MAX/MIN Measurement】Press RANGE key to measure the maximum value of MAX and minimum value of maximum duration of more than 3 seconds is recorded, with a normal sampling rate of seconds. The maximum error is ± 5%.
【Result Hold】The measurement result (HOLD) function;Press the HOLD key to hold the measured sound level value
【Sound level OVER or UNDER indicates】If the display displays "UNDER" or "OVER" characters, the sound level is lower than 30dB or higher than 130dB.
【LCD with backlight】After power-on, the backlight will automatically light up and turn off after 30 seconds. Press the backlight button to turn on the backlight.
【Automatic SHUTDOWN】3 minutes after the stop button, the meter will automatically shut down to save power.
【Low power indicator】 When the battery voltage decreases to a certain extent, the battery symbol in the upper right corner of the display will light up. In this case, the battery should be replaced.
Summary Eliminate doubts and solve difficulties Problem 1: DB was not detected where I needed it? Answer:This product is designed for environmental noise measurement (30-130 dB), but some users mistakenly use it for extremely low or high frequency sound sources (such as electrical micro noise, ultrasonic equipment), resulting in no readings. This is a misunderstanding of the usage scenario, not a device malfunction. Problem 2: Inaccurate/inaccurate readings? Answer:Under laboratory conditions, testing with a standard sound source calibrator (NTi Audio XL2+speaker system) showed an error range of ± dB, in compliance with IEC 61672-1 Class 2 standard. The customer's claim of "inaccuracy" is mainly due to background interference, improper distance, or lack of zero calibration. Problem 3:Not suitable for the room? Answer:It is speculated that the user expects it to be used for monitoring quiet home environments (such as baby rooms, study rooms), but this model is more suitable for noise assessment in industrial, building, or public places. Problem 4:Is it not sensitive at all? Answer:The sensitivity measurement reaches 40mV/Pa @ 1kHz, and the performance of the polarizer micro meets the standard. The so-called 'insensitivity' often occurs at a distance (>5 meters) or when the direction deviates from the main axis. Belongs to normal physical attenuation phenomenon, not a defect Problem 5:Large reading fluctuations/display jumps? Dynamic environments (such as traffic noise and intermittent machine operation) should reflect real changes; If there is abnormal jumping in a static environment, it may be caused by insufficient battery voltage or micro moisture.